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1. Which of the following will not add john to the users array?
1. $users[] = 'john';
2. array_add($users,'john'); //wrong
3. array_push($users,'john');
4. $users ||= 'john'; //wrong
2. What's the difference between sort(), asort() and ksort? Under what circumstances would you use each of these?
my an:sort()-排序 asort()-保持key值排序 ksort()-以key順序排序 rsort()-逆排序 arsort()-保持key值逆排序 krsort()-以key逆順序排序
3. What would the following code print to the browser? Why?
$num = 10;
function multiply()
{
$num = $num * 10;
}
multiply();
echo $num;
my an:10 because var scope4. What is the difference between a reference and a regular variable? How do you pass by reference & why would you want to?
5. What functions can you use to add library code to the currently running script?
6. What is the difference between foo() & @foo()?
7. How do you debug a php application?
8. What does === do? What's an example of something that will give true for ‘==', but not ‘==='?
9. How would you declare a class named “myclass” with no methods or properties?
10. How would you create an object, which is an instance of “myclass”?
11. How do you access and set properties of a class from within the class?
12. What is the difference between include & include_once? include & require?
13. What function would you use to redirect the browser to a new page?
1. redir() 2. header() 3. location() 4. redirect()
my an :2
14. What function can you use to open a file for reading and writing?
1. fget(); 2. file_open(); 3. fopen(); 4. open_file();my an :315. What's the difference between mysql_fetch_row() and mysql_fetch_array()?
16. What does the following code do? Explain what's going on there.
$date='08/26/2003'; print ereg_replace(“([0-9]+)/([0-9]+)/([0-9]+)”,2/1/3,$date);17. Given a line of text $string, how would you write a regular expression to strip all the HTML tags from it?
18. What's the difference between the way php and Perl distinguish between arrays and hashes?
19. How can you get round the stateless nature of HTTP using php?
20. What does the GD library do?
21. Name a few ways to output (print) a block of HTML code in php?
22. Is php better than Perl? 主站蜘蛛池模板： 国产视频精品视频 | 看全色黄大色黄大片 视 | 久久加勒比 | 精品视频一区二区三区在线播放 | 成人a视频在线观看 | 91视频最新地址 | 综合成人| 欧美亚洲国产日韩 | 国产高清免费的视频 | 国产成人精品午夜免费 | 国产日韩精品一区二区三区 | 亚洲精品天堂自在久久77 | 亚洲性片 | 精品无码久久久久久国产 | 大杳焦伊人久久综合热 | 老湿司午夜爽爽影院榴莲视频 | 亚洲欧美视频在线播放 | 国产一区二区视频在线观看 | 国产不卡一区二区三区免费视 | 欧美视频福利 | 精品一区二区影院在线 | 亚洲伊人久久综合 | 亚洲图片视频在线 | 激情小说视频图片 | 黄色网视频| 49pao强力在线高清基地 | 国产手机国产手机在线 | 亚洲黄色在线看 | 色老板在线视频 | 91噜噜噜在线观看 | 色啊色 | 欧美成人精品三级网站 | 国产麻豆免费 | 亚洲最大综合网 | 91视频啪 | 伊人久久大香线蕉综合高清 | 看全色黄大色黄大片视频 | 亚洲精品乱码国产精品乱码 | 色一本 | 免费一区二区三区免费视频 | 精品久久天干天天天按摩 |